Which of the following expressions is correct for the rate of reaction given below?
` 5 Br^(-) (aq) +BrO_(3)^(-) (aq) + 6H^(+) (aq) to 3Br_2(aq) + 2H_2 O(l)`

Options

A. `(Delta [Br^(-)])/(Delta t)=5 ( Delta [H^(+)])/( Delta t)`
B. `(Delta [Br^(-)])/(Delta t)=6/5 ( Delta [H^(+)])/( Delta t)`
C. `(Delta [Br^(-)])/(Delta t)=5/6 ( Delta [H^(+)])/( Delta t)`
D. `(Delta [Br^(-)])/(Delta t)=6 ( Delta [H^(+)])/( Delta t)`

Answer

C

Explanation

Rate ` =-1/5 (Delta [Br^(-)])/( Delta t) =- ( Delta [BrO_(3)^(-)])/(Delta t) =- 1/6 (Delta [H^(+)])/(Delta t) " " therefore (Delta [Br^(-)])/(Delta t) = 5/6 (Delta [BrO_(3)^(-)])/(Delta t) = 5/6 (Delta [H^(+)])/(Delta t)`